could you please elaborate? avoid using excessive simplified sentences.
- op, you said, you attached your first pwm fan to CPU_FAN connector, and it works.
- you attached your second pwm fan to the CPU_OPT connector, but it's not revealed in the bios, as in your bios reading shows N/A (not available, not spinning)
las week i have tested a hero vi mb, with other pwm fan but same issue.... In your one it's work?
i started to lose you after this part, i think you're trying to say: last week i've tested a hero IV motherboard, with other pwm fan (which pwm fan? is it the same fan that you're currently using, or some other random pwm fan? and what did you mean same issue? did you mean the bios didn't show RPM value?)
your next replies made me think the fan did spin, but the RPM isn't shown in the bios . is that correct?
can you try, to let's say, unplug that what-you-may-think-to-be-problematic-fan header, plug it into other fan connector, any that you can find, in your motherboard. you know what? use the CHA_FAN (chassis fan) header (it's working right?). if something else is plugged in there pull it out and plug the fan you want to test in.
this is to confirm whether your pwm fan is broken or not.
no siggy, saw stuff that made me sad.
